CN1043832A - 4-layer-overlapped washer forming method and mould - Google Patents
4-layer-overlapped washer forming method and mould Download PDFInfo
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- CN1043832A CN1043832A CN 89105719 CN89105719A CN1043832A CN 1043832 A CN1043832 A CN 1043832A CN 89105719 CN89105719 CN 89105719 CN 89105719 A CN89105719 A CN 89105719A CN 1043832 A CN1043832 A CN 1043832A
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Abstract
4-layer-overlapped washer forming method and mould, be to be shaped to the ring tube that the cross section is L shaped shape earlier by sheet metal, then to ring tube inside and outside wall port outward flanging, at last to ring drum outer wall and flange reducing thereof distortion behind the flange, the extrusion flange and make outer wall along the bottom circumferential axle center be bent to flanged lip along with outer wall applying final molding be 4-layer-overlapped washer.Above-mentioned three one-step forming processes realize in a mould and one procedure respectively.The 4-layer-overlapped washer deformable amount of institute's moulding is big, and outward appearance and good seal performance have been produced in batches and the folded formula packing ring of alternative nickel-plated copper is assemblied in export trade on for export the spark plug.
Description
Stacked packing ring is that the spark plug connection seals with the packing ring that do not come off, present many both at home and abroad use three ply formula red coppers or steel packing rings.Copper washer plasticity is good, deflection is big, good airproof performance, but the material cost height, and compound steel matter gasket deforms amount is little, and when spark plug flat seat or cylinder cap screw thread end face were coarse, sealing was poor, easily produces leakage especially.Developed the steel 4-layer-overlapped washer outside the native land again, its deflection is big, can guarantee sealing reliably.
Domesticly do not produce this steel 4-layer-overlapped washer always.Also do not see or find the open source information of this packing ring forming method and mould, estimation may be the design progressive press tool, but the progressive press tool complex structure, the manufacturing difficulty, and require the certain band steel of size, and cost is also high, and forming step can not be less than four times.
The object of the present invention is to provide a kind of forming method and the mould thereof of 4-layer-overlapped washer, satisfy that mould structure is simple, cost is low, operation is few, be fit to baby press, and can utilize the leftover bits stay-in-grade steel 4-layer-overlapped washer of High-efficient Production in batches.
Below in conjunction with accompanying drawing to the detailed description of the invention:
Fig. 1 illustrates the forming process and the step of 4-layer-overlapped washer;
Fig. 2-a is a compund die structure chart of the present invention;
Fig. 2-b is compund die completed state figure;
Fig. 3-a is flange punch die completed state figure of the present invention;
Fig. 3-b is flange punch die (counterdie) structure chart (patrix does not mark);
Fig. 4-a is a form die structure chart of the present invention;
Fig. 4-b is form die completed state figure;
The forming method of 4-layer-overlapped washer of the present invention step and technology is according to the following procedure realized:
(1) sheet metal that at first will satisfy thickness requirement blanking punching on forcing press is drawn into the ring tube that the longitudinal section is L shaped shape, ring tube inside and outside wall is the concentric circles cylinder, ring tube one end opening, outer wall is higher than inwall, and the other end has and flatly is connected as Fig. 1-a with the inside and outside wall circular arc.
(2) with L shaped shape ring tube openend inside and outside wall outward flanging, in the turn-up process, the workpiece port is by outwards turnup distortion, and turnup length is changed from small to big, and skirt materials is subjected to tensile stress.Behind the flange, the opening of external wall place forms a flange, flange and outer wall quadrature or slightly downward-sloping; The curved bending of inwall opening part flange, its end edge is near encircling the drum outer wall bottom as Fig. 1-b.
(3) with the ring drum outer wall behind the flange and flange reducing thereof distortion, the extrusion flange also makes outer wall circumferential axle center is bent to the flanged lip end and outer wall applying final molding is 4-layer-overlapped washer such as Fig. 1-c along the bottom.
4-layer-overlapped washer forming method of the present invention is characterized in that comprising above-mentioned (1), (2), (3) one-step forming process and corresponding technology.Its optimum implementation is that to go on foot each one-step forming be respectively to finish in one different operation in a different mould for above-mentioned (1), (2), (3).
Below punch die structure of the present invention is specified.
The L shaped shape ring of punching out tube is realized by compund die provided by the invention.The compund die structure as shown in Figure 2.Punch die is made up of upper and lower mould.
By cope match-plate pattern 1, punch holder 2, beat bar 3, spring 4, plate 5, push rod 6, punching punch 7, expanding sleeve 8, move back the patrix that part cover 17, blanking die 18, fixed cover 19, fixed head 20, cover plate 21 etc. are formed, its punching punch 7 be a multidiameter shape structure, expanding sleeve 8, move back that part overlaps 17, blanking die 18, fixed cover 19 have the step axle sleeve structure.Part 7,8,17,18,19 successively with its inside and outside circle cylinder radially successively nestable mutually.Axially then fixed head 20, cover plate 21 overlap on the fixed cover 19 successively and install and fix with cope match-plate pattern 1 and be integral, and finish blanking die 18, expanding sleeve 8, punching punch 7 mutually and be sleeved on the axial location of the punch holder 2 in the cope match-plate pattern 1, and the raised head face that moves back part cover 17 touches mutually with several push rods 6 that pass hole on cover plate 21, the fixed head 20, and interrelate, thereby move back part cover 17 and can in the cavity that expanding sleeve 8, blanking die 18 and fixed head 20 form, axially slide by push rod 6, plate 5 and spring 4 in the punch holder 2.
Formed counterdie by discharging cover 9, fixed cover 10, punch-die 11, lower bolster 12, concavo-convex mould 15, head part cover 16 etc.Concavo-convex mould 15, head part cover 16, punch-die 11, discharging cover 9 and fixed cover 10 with step axle sleeve structure with its inside and outside circle cylinder at layer cover successively mutually radially.Concavo-convex mould 15, punch-die 11 and fixed cover 10 are respectively with its end face support and be fixed on the lower bolster 12 and obtain axial location.The all similar patrix of raised head face of head part cover 16, discharging cover 9 interrelates by push rod 14,13 and template 12 belows spring assembly (not shown on the figure) separately, makes head part cover 16, discharging cover 9 to endwisely slip.
During work, it is descending that forcing press drives patrix, at first die 18 is finished the blanking work step with punch-die 11, patrix continues descending, punch-die 11 and expanding sleeve 8 effects, thin plate begins to be drawn into basin shape, and the punch 7 that punches is then finished punching with concavo-convex mould 15 effects, and then expanding sleeve 8 continuities and concavo-convex mould 15, punch-die 11 effects, stretching inwall and continuation stretching outer wall are ended to stroke and are shaped to the workpiece shown in Figure 10 a.When patrix was up, the head part cover 16 that moves back in part cover 17 and the counterdie withdrawed from workpiece from upper die and lower die respectively, and discharging cover 9 then draws off sheet material in counterdie.
The structure of flange punch die as shown in Figure 3.Constitute by upper and lower mould.
The patrix 22 that is fixed on the punch holder is axial workpieces, and head (lower end) has the inversed taper platform of thin weak point, and being right after that frustum bottom has by the curve that meets inside and outside wall flange shape need is two ring-shaped steps of bus.
Cover 23, overcoat 25 in counterdie contains, the surfaces externally and internally of inside and outside cover all has the ladder cylindrical surface structure, and the big footpath of two covers boss end puts in overcoat is placed in down, is fixed on the lower bolster 26 by fixed cover 24.The spring assembly (not shown on the figure) that interior cover 23 boss lower surfaces head on push rod 27 and template 26 belows interrelates, and can endwisely slip in overcoat macropore length range.At ordinary times, promptly under the spring spindle effect, when interior cover boss upper surface was pressed against on the bottom surface of overcoat 25 macropores, the cover end face was lower than overcoat in should having.In the cover centre bore one backstay of being supported by spring 28 elasticity 29 also is housed, promptly its boss upper surface is pressed against under spring action at ordinary times on the cover 23 big hole end surfaces time, backstay 29 should stretch out to be higher than and interiorly overlap 23 and overcoat 25, sees Fig. 2-b.
During work, the elder generation port up the inwall borehole jack of L shaped shape ring tube on backstay 29, the ring drum outer wall is then lived by the borehole jack of overcoat 25, ring tube bottom surface is supported on the end face of interior cover 23, when forcing press drive patrix is descending, patrix 22 head frustums are at first oppressed backstay 29 in company with descending, and patrix is descending and a L shaped ring inside and outside wall carried out outward flanging by cover in the work compressing 23 subsequently.During flange, the inside and outside wall port is outwards dug gradually, to stroke end of a period final molding be the shape shown in Fig. 1-b.Patrix is up, the loosening pressing product in top on interior cover 23 backstays 29.
The shaping punch die structure that upper and lower mould is formed as shown in Figure 4
Patrix 34 cover that is fixed 33 is fitted on the punch holder 31.Moulding patrix 34 is the parts with axle sleeve structure, and its head (lower end) has the horn mouth inner chamber of frustum, and its conical surface is connected by arc transition with the bottom surface.Horn mouth inner chamber top has coaxial cylindrical hole, interior dress to head on the head part bar 32 of making bar 30, and the head part bar can endwisely slip in the cavity height scope of punch holder 31, the head part shank diameter greater than cinclides in the workpiece less than outer cinclides.
Fix an axle sleeve 36 with fixed cover 37 on the lower bolster 38, the frustum that matches with patrix 34 horn mouths is arranged at its top, then adorning alignment pin 35 in its centre bore, alignment pin 35 relies on spring 39 flexibly to be supported on the lower bolster by lower boss, make alignment pin that axial slip can be arranged, alignment pin stretches out axle sleeve 36.
Forming process is such.Earlier up with the workpiece openings end behind the flange, with inner wall sleeve on alignment pin 35, forcing press drives patrix 34 when descending, its push rod 32 contacts with the alignment pin 35 of counterdie and is withstood no longer and ends when offseting with punch holder 31 inner chamber upper surfaces with patrix is descending, process simultaneously therewith, patrix 34 head horn mouths at first with the flanged lip of workpiece outer wall along contacting, along with the patrix 34 descending radial dimensions that contact with flanged lip diminish, forcing flange to produce radial compression closes up, force outer wall circumferential axle center bending simultaneously along the bottom, fit until flanged lip end and outside wall surface, final molding is required 4-layer-overlapped washer such as Fig. 1-c.Patrix is up, and push rod 32 is in deadweight and beat under the strike of bar 30 and withdraw from workpiece from patrix.
Use this law and formed in mould 4-layer-overlapped steel packing ring. Deformable amount is big, outward appearance and good seal performance, has produced and has substituted the stacked packing ring of copper nickel plating (outlet appearance requirement white) in batches and be assembled to export trade on for export the spark plug.
Claims (5)
1, the forming method of the steel 4-layer-overlapped washer that uses on a kind of spark plug is to be formed by the sheet material punching out, it is characterized in that forming step process and technology are:
(1) with steelplate punching blanking punching and be drawn into the ring tube that the longitudinal section is L shaped shape, a ring tube inside and outside wall is the concentric circles cylinder, an end opening, and outer wall is higher than inwall, and the other end has and flatly is connected with the inside and outside wall circular arc;
(2) with L shaped shape ring tube openend inside and outside wall outward flanging, behind the flange, the opening of external wall place forms flange quadrature or that slightly dip down, the curved bending of inwall opening part flange, and its ora terminalis is near ring drum outer wall bottom;
(3) with the ring drum outer wall behind the flange and flange reducing thereof distortion, the extrusion flange also makes outer wall circumferential axle center is bent to the flanged lip end and outer wall applying final molding is a 4-layer-overlapped washer along the bottom.
2, it is characterized in that by the forming method of the described 4-layer-overlapped washer of claim 1 it is respectively to finish that described (1), (2), (3) go on foot each one-step forming in a different mould in different one procedure.
3, be a kind of compund die of forming by upper and lower mould by the mould in the described 4-layer-overlapped washer forming method of claim 1.It is characterized in that:
(1) by punching punch 7, expanding sleeve 8, move back the patrix that part cover 17, blanking die 18, fixed cover 19, fixed head 20, cover plate 21 etc. are formed, the expanding sleeve 8 that it has the punching punch 7 of multidiameter shape and has the step axle sleeve structure, material returning sleeve 17, blanking die 18, fixed cover 19 successively with its inside and outside circle cylinder radially successively nestable mutually, fixed head 20,21 of cover plates overlap successively vertically to install and fix on the fixed cover 19 and with cope match-plate pattern 1 and are integral.Finish blanking die 18, expanding sleeve 8, punching punch 7 mutually and be sleeved on the axial location of the punch holder 2 in the cope match-plate pattern 1.And the raised head face that moves back part cover 17 touches mutually with several push rods 6 that pass hole on cover plate 21, the fixed head 20, and interrelate by push rod 6, plate 5 and spring 4 in the punch holder 2, move back part cover 17 and can in the cavity that expanding sleeve 8, blanking die 18, fixed head 20 form, axially slide;
(2) counterdie of forming by discharging cover 9, fixed cover 10, punch-die 11, lower bolster 12, concavo-convex mould 15, head part cover 16 etc.Its concavo-convex mould 15, head part with step axle sleeve structure overlap 16 punch-dies 11, discharging cover 9 and fixed cover 10 with its inside and outside circle cylinder at layer cover successively mutually radially, concavo-convex mould 15, punch-die 11 and fixed cover 10 obtain axial location respectively with its end face support and be fixed on the lower bolster 12.The protruding all similar patrix of end face that closes of head part cover 16, discharging cover 9 interrelates by push rod 14,13 and template below spring assembly separately, can endwisely slip when part 16, part 9 work;
(3) patrix that is driven by forcing press in the work round trip, is finished the moulding that blanking, punching and drawing process to sheet material realized L shaped shape ring tube of (1) step in the forming process by interacting with counterdie, and the work and the plate that withdraw from punching out.
4, by the mould in the described 4-layer-overlapped washer forming method of claim 1, be a kind of flange punch die of forming by upper and lower mould, it is characterized in that:
(1) patrix 22 is axial workpieces, and head has the inversed taper platform of thin weak point, and being right after that frustum bottom has by the curve that meets inside and outside wall flange shape need is two ring-shaped steps of bus;
(2) cover 23, overcoat 25 in counterdie contains, the surfaces externally and internally of inside and outside cover all has the ladder cylindrical surface structure, and the big footpath of two covers boss end puts in overcoat is placed in down, is fixed on the lower bolster 26 by fixed cover 24.The spring assembly that interior cover 23 boss lower surfaces head on push rod and template 26 belows interrelates, can in overcoat macropore length range, endwisely slip, and the cover end face is lower than overcoat in having at ordinary times, interior cover centre bore is equipped with a backstay 29 by spring 28 supports, cover 23 and overcoat 25 in backstay 29 should stretch out and be higher than at ordinary times;
(3) patrix that is driven by forcing press interacts with counterdie in the round impulse stroke, finishes flanging process.Realize the flange moulding and the last top of the moulding end of a period workpiece of L shaped shape ring tube inside and outside wall.
5, by the mould in the described 4-layer-overlapped washer forming method of claim 1, be a kind of shaping punch die of forming by upper and lower mould, it is characterized in that:
(1) head of patrix 34 has the horn mouth inner chamber of frustum.The conical surface is connected with the bottom surface arc transition, in the coaxial cylindrical hole in horn mouth inner chamber top, is equipped with and heads on the head part bar 32 of making bar 30, and the head part shank diameter, can endwisely slip in the cavity height scope of punch holder 31 less than outer cinclides greater than the interior cinclides of workpiece;
(2) counterdie contains alignment pin 35 and axle sleeve 36 etc., and alignment pin 35 is loaded in the axle sleeve 36 and by lower boss and relies on spring 39 to be supported on the lower bolster 38, and axial slip can be arranged, and highly stretches out axle sleeve 36;
(3) patrix that is driven by forcing press comes and goes in the impulse stroke and interacts with counterdie, finishes the reducing flexural deformation to outer wall and flange thereof, and fitting to flanged lip end and outer wall finally is configured as 4-layer-overlapped washer and workpiece is withdrawed from the end of a period that is shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105719 CN1043832A (en) | 1989-05-13 | 1989-05-13 | 4-layer-overlapped washer forming method and mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89105719 CN1043832A (en) | 1989-05-13 | 1989-05-13 | 4-layer-overlapped washer forming method and mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1043832A true CN1043832A (en) | 1990-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89105719 Pending CN1043832A (en) | 1989-05-13 | 1989-05-13 | 4-layer-overlapped washer forming method and mould |
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| Country | Link |
|---|---|
| CN (1) | CN1043832A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108602110A (en) * | 2016-02-18 | 2018-09-28 | Nok株式会社 | The manufacturing method of the spring member of sealing device |
| CN106734304B (en) * | 2016-12-08 | 2018-10-19 | 湖南特诚成套电器有限公司 | A kind of extrusion press |
| CN116586923A (en) * | 2023-07-14 | 2023-08-15 | 成都迈特航空制造有限公司 | Manufacturing method of lightning protection nut assembly with gasket ring sleeve |
-
1989
- 1989-05-13 CN CN 89105719 patent/CN1043832A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108602110A (en) * | 2016-02-18 | 2018-09-28 | Nok株式会社 | The manufacturing method of the spring member of sealing device |
| CN106734304B (en) * | 2016-12-08 | 2018-10-19 | 湖南特诚成套电器有限公司 | A kind of extrusion press |
| CN116586923A (en) * | 2023-07-14 | 2023-08-15 | 成都迈特航空制造有限公司 | Manufacturing method of lightning protection nut assembly with gasket ring sleeve |
| CN116586923B (en) * | 2023-07-14 | 2023-10-24 | 成都迈特航空制造有限公司 | Manufacturing method of lightning protection nut assembly with gasket ring sleeve |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
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